Set up Quick remote on your phone
The Quick Remote app on the LG G4 is essentially a universal remote in your smartphone. Beyond the regular TVs and set-top boxes, you’ll also be able to control most brands of audio equipment and projectors, but just a handful for air conditioners.
All you have to do is tap on the + sign on the top right corner of the app, select the device and brand, follow the onscreen instructions, and repeat as many times as required with each remote you need.
Even if it’s not listed, the app can learn activation signals from existing remotes you have at home, meaning you could gain mastery over just about anything.
Activate Smart Settings
By going to Settings > General > Smart settings, you can toggle the LG G4’s Smart settings to perform tasks when parameters are met. Right now, you can turn Bluetooth and Wi-Fi on/off automatically or choose your sound profile when at home/out, select what happens when you plug earphones in, or choose the app that opens when you connect devices via Bluetooth.
Use Glance View
When you’re trying to be discreet or in a place such as a dark cinema, you don’t want to have to turn on the entire screen just to check the time. Glance view lets you look at the time, date, and status bar when the screen is off, just by dragging downwards from the top of the screen. You won’t be able to see full notifications, but you can see what apps need your attention from the status bar icons.
Use the Scientific Calculator
Ordinary calculators are so… unscientific. If, for some reason, you need your phone to perform advanced calculations, go to the Calculator app, hit the Menu button, and select Scientific Calculator to get your Sin/Cos/Tan on. Alternatively, you could turn your phone to landscape mode for the same effect.